Honeywell C7400 Manual page 24

SOLID STATE ECONOMIZER SYSTEM
C7400
OUTDOOR
AIR
ENTHALPY
SENSOR
Y1
Y2
W2
W1
A2
4
A1
G
RH
RC
X
T7300/Q7300
THERMOSTAT
1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
2
ENSURE THAT TRANSFORMER IS SIZED TO HANDLE THE EXTRA LOAD OF THE ECONOMIZER AND ACTUATOR. USE THE SAME
TRANSFORMER FOR T7300 AND ECONOMIZER.
3 FACTORY INSTALLED 620 OHM, 1 WATT, 5% RESISTOR SHOULD NOT BE REMOVED. DIFFERENTIAL ENTHALPY NOT RECOMMENDED FOR USE
WITH SINGLE-STAGE COOLING SYSTEMS OR SINGLE-STAGE COOLING THERMOSTATS.
4
T7300 TERMINALS A1 AND A2 ARE CONNECTED WHEN THERMOSTAT IS IN THE OCCUPIED MODE.
EF AND EF1 ARE DRY CONTACTS IN THE LOGIC MODULE.
5
63-2484—03
C7150B MIXED
AIR OR C7046A
DISCHARGE
AIR SENSOR
–
0/2-10 VDC
INDOOR AIR
+
SENSOR
+
3
620 OHM
S
RESISTOR
Fig. 31. W7212 used with M7215 Damper Motor and T7300 Thermostat.
TR
N1
N
MINIMUM POSITION
24
P1
ADJUSTMENT Vac
HOT
P
T1
+
T
AQ1
AQ
SO+
SO
EF
SR+
SR
W7212
C
Y1
Y2
W2
W1
A2
A1
G
R
HVAC EQUIPMENT
TERMINAL STRIP
24
TR1
24 VAC HOT
24 Vac
COM
24 VAC COM
–
2-10 VDC CONTROL
SIGNAL INPUT
1 2
5
3 4
EF1
M7215
5
EXHAUST
FAN
COOL 1
COOL 2
HEAT 2
HEAT 1
FAN
L1
(HOT)
L2
2
L2
1
L1
(HOT)
M20716D